Cooling device for explosive-engines.



P. D. DAVIS & E. M. PAXSON. 000mm DEVICE FOR EXPLOSIVE ENGINES.

APPLICATION FILED FEB. 5, 1913.

Patented Mar. 17, 1914.

wunlilllllll s z 0 t m c U t 1 o o wi tmeomm UNITED STATES PATENT OFFICE.

PEARL D. DAVIS AND ELWOOD M. PAXSON, 0F BELLE CENTER, OHIO.

COOLING DEVICE FOR EXPLOSIVE-ENGINES.

Specification of Letters Patent.

Patented Mar. 17, 1914.

Application filed February 5, 1913. Serial No. 746,360.

To all whom it may concern:

Be it known that we, PEARL D. DAVIS and ELwoon M. PAxsoN, citizens of the United States, residing at Belle Center, in the county of Logan and State of Ohio, have invented certain new and useful Improvements in Cooling Devices for Explosive-Engines; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our inventionrelates to new and useful improvements in cooling devices for ex plosive engines and more particularly to a device for cooling the crank case of an englue.

The object of our invention is to provide a device which will cause a circulation of air through the crank case of an explosive engine. I

A further object of our invention is to so construct the device that the oil carried from the crank case by the heated air will be collected and directed back into the crank case. 1

Other objects and advantages of our invention will be hereinafter more clearly set forth and pointed out in the claims.

In the accompanying drawings, we have shown the preferred forms of our invention and. in which,

Figure 1 is a perspective view partly broken away of the cooling device. Fig. 2 is a vertical sectional view through the bottom portion of the casing disclosed in Fig. 1.

Referring to the drawings in which simi lar reference numerals designate corresponding parts throughout the several views, 31 represents a casing having'a bottom 32 provided centrally with an opening 33. That portion of the bottom 32 which is adjacent the opening 33 is depressed to form a circular gutter 34 having the gutters 35 radiating therefrom. Secured in the o ening 33 is the pipe 36, the lower end of w ich is adapted to be secured to the crank case (not shown) of an explosive engine while the upper end of said pipe is extended some distance upwardly within the casing 31 and curved and has the free end thereof directed downwardly. The bottom 32 of the casing has integral therewith a drain pipe 37 which extends through a suitable opening in the pipe 36 and connnunicates with the gutters 34 and 35.

Removably positioned within the upper end of the casing 31 is the filtering drum 38, the walls of which are tapered downwardly, having secured therein the screen sections 39 for preventing the oil contained in the vapor leaving the crank case from being blown out of the casing. The upper edge of the drum 38 is turned outwardly and adapted to rest upon the upper edge of .the casing 31 for supporting said drum in position. Disposed between the open end oi. the plpe 36 and the bottom 32 of the casing is an inclined screen 39 for collecting and draining to the bottom of the casing any oil carried by the air discharged from the pipe 36.

The vertical walls of the casing 31 are provided with longitudinal ribs or projections 40 for holding in spaced relation therefrom the cap 41 which is telescopically eugaged over the upper end of the casing 31. The cap 41 is held in adjusted position over the casing 31 by means of the threaded stems 42 engaged within slots 43 having secured thereoyer the wing nuts 44.

The operation of the device will now be described in detail.

Upon the up stroke of the piston of an explosive engine, a partial vacuum is created in the crankcase and air will be drawn in between the casing 31 and the cap 41 and into the interior of the casing 31 through the screen sections 39, the screen sections separating from the air dust and dirt. From the interior of the casing 31, the atmospheric air is drawn through the pipe 36 and thence into the crank case (not shown). This fresh supply of air will help cool the crank case and the portion of the cylinder exposed when the piston moves to the upper portion thereof. Upon the down stroke of the piston, the air in the crank case will be slightly ":eompressed and will escape into the interior of the casing 31 and thence to the atmosphere between the casing 31 and cap 41. When the air is blown outwardly from the crank case, the particles of oil contained therein will be collected upon the screen 35) and prevented from leaving the casing by means 01 the filtering drum 38. lt is obvious that when sullicient oil has gathered over the sections of screens 39 and 39, the same will drop downwardly and upon the bottom 32. Said bottom is in clined downwardly from its outer edges to the inner portion thereof whereby the oil dropping thereon will readily flow to the circular gutter 34, thence into the drain pipe 37 from whence upon the up stroke of the piston of the engine, the oil will be drawn back into the crank case. It will thus be seen that a fresh supply of air will be continuously circulated through the crank case, thus keeping the same cool. It will also be seen that any oil which may become vaporized, due to the heat in the crank case, will be condensed when passing through the screen sections and returned into the crank case.

What we claim as new is 1. A device of the character described comprising a casing, a cap telescopically engaged thereover, a pipe extending upwardly through said casing, the bottom of said casing being provided with a gutter surrounding said opening and additional gutters extending radially therefrom, and a drain pipe communicating with said gutter and the interior of said pipe. I

2. A device of the character described comprising a casing having an upper open end, the bottom of said casing being provided centrally with an opening and having a gutter surrounding said opening and additional gutters extending radially-therefrom, a pipe secured in the opening in said bottom and extending upwardly within said casing, a drain pipe communicating with the interior of said casing and with said gutters and extending through said pipe, a filtering drum disposed over the upper end' of said casin and a cap disposed over the upper end 0 said casing.

' 3. A device of the character described comprising a casing having an upper open end and a bottom inclined downwardly from the outer edges to the center thereof, said bottom being provided with a central opening and depressions forming circling said opening and extendin radially therefrom, a pipe-secured in sai opening extending upwardly within said casing and having the upper end thereof curved and directed downwardly, a drain pipe communicating with said utters and extending through said pipe, a fi tering drum disposed over the upper open end of said casing, and a cap telescopically engaged over the upper end thereof, 3

, 4. A device of the. character described comprising a casing having an upper open end, a capv telescopically engaged over sa1d casing, a pipe extendin upwardly through said casing and having the upper end curved and directed downwardly, an inclined section of foraminous material .disposed beneath the curved end of said pipe, gutters gutters formed in thebottom of said casing and v surrounding said pipe and extending radially therefrom, and a drain pipe. communicatin with said gutters and the'interior of sai pipe.

In testimony whereof'we have signed our names to this specification in the presence of two subscribing witnesses.

v PEARL D. DAVIS.

ELWOOD M. PAXSON. Witnesses:

M. L. MAINS,- KENNUTH HovnR. 

